I love these large seashells, professionally cleaned and crafted into oil lamps. They would be the perfect addition to any destination wedding deco. They are a great alternative to traditional candles and from a practical perspective, they might do a better job of staying lit in the ocean breeze. Also nice is they can be a lasting investment, not one-time expense as is the case with most wedding decor.
Take a look at these and many other unique decorative shell ideas at Conch King.